Seawater intrusion into low‐lying coastal ecosystems carries environmental risks. Salinity
levels at these coastal ecosystems may vary substantially, causing ecological effects from …

As a result of the increasing consumption of fossil fuels all over the world, the ongoing global
warming caused by rising atmospheric carbon dioxide (CO 2) concentrations has attracted …

Sea level and deep-sea temperature variations are key indicators of global climate changes.
For continuous records over millions of years, deep-sea carbonate microfossil–based δ18O …

Ancestral cyanobacteria are assumed to be prominent primary producers after the Great
Oxidation Event [≈ 2.4 to 2.0 billion years (Ga) ago], but carbon isotope fractionation by …

The Southern Ocean is showing one of the most rapid responses to human‐induced global
change, thus acting as a sentinel of the effects on marine species and ecosystems. Ocean …

Global ice volume (sea level) and deep‐sea temperature are key measures of Earth's
climatic state. We synthesize evidence for multi‐centennial to millennial ice‐volume and …

Several studies have exploited the stable calcium (Ca) and strontium (Sr) isotope
compositions of marine carbonate rocks to investigate ancient carbon cycle dynamics …

Abstract Coral Ba/Ca is a proxy for seawater barium concentration that varies with upwelling,
terrigenous input, and marine productivity whereas coral Sr/Ca varies with temperature. We …

Insights into past marine carbon cycling and water mass properties can be obtained by
means of geochemical proxies calibrated through controlled laboratory experiments with …

In many biogenic and geogenic materials, ion impurities can provide serviceable proxies for
environmental conditions. However, the element/Ca ratios of bivalve shells are notoriously …